<template>
    <div>
        <!-- 面包屑导航 -->
        <el-breadcrumb separator-class="el-icon-arrow-right">
            <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
            <el-breadcrumb-item>用户管理</el-breadcrumb-item>
            <el-breadcrumb-item>用户列表</el-breadcrumb-item>
        </el-breadcrumb>
        <!-- 将数据部分放在卡片视图里面 -->
        <el-card>
            <el-row :gutter="20">
                <el-col :span="7">
                    <el-input
                        placeholder="请输入内容"
                        v-model="queryinfo.query"
                        clearable
                        @clear="getUserList"
                    >
                        <el-button slot="append" icon="el-icon-search" @click="getUserList"></el-button>
                    </el-input>
                </el-col>
                <el-col :span="4">
                    <el-button type="primary" @click="addDialogVisible = true">添加用户</el-button>
                </el-col>
            </el-row>
            <!-- 展示用户信息区域 -->
            <el-table :data="userList" border stripe>
                <el-table-column prop="username" label="用户名"></el-table-column>
                <el-table-column prop="email" label="邮箱"></el-table-column>
                <el-table-column prop="mobile" label="电话"></el-table-column>
                <el-table-column prop="role_name" label="角色"></el-table-column>
                <el-table-column label="状态">
                    <template slot-scope="scope">
                        <el-switch
                            @change="userStateChanged(scope.row)"
                            v-model="scope.row.mg_state"
                            active-color="#13ce66"
                            inactive-color="#ff4949"
                        ></el-switch>
                    </template>
                </el-table-column>
                <el-table-column label="操作">
                    <template slot-scope="scope">
                        <div>
                            <el-button
                                type="primary"
                                icon="el-icon-edit"
                                size="mini"
                                @click="showEditUsers(scope.row.id)"
                            ></el-button>
                            <!-- 删除 -->
                            <el-button
                                type="danger"
                                icon="el-icon-delete"
                                size="mini"
                                @click="delUsers(scope.row.id)"
                            ></el-button>
                            <!-- 分配角色 -->
                            <el-tooltip
                                class="item"
                                effect="dark"
                                content="分配角色"
                                placement="top"
                                :enterable="false"
                            >
                                <el-button
                                    type="warning"
                                    icon="el-icon-setting"
                                    size="mini"
                                    @click="showUsersRoles(scope.row)"
                                ></el-button>
                            </el-tooltip>
                        </div>
                    </template>
                </el-table-column>
            </el-table>
            <!-- 分页页码条区域 -->
            <el-pagination
                @size-change="handleSizeChange"
                @current-change="handleCurrentChange"
                :current-page="queryinfo.pagenum"
                :page-sizes="[1, 2, 5, 10]"
                :page-size="queryinfo.pagesize"
                layout="total, sizes, prev, pager, next, jumper"
                :total="total"
            ></el-pagination>
        </el-card>
        <!-- 添加用户对话框 -->
        <el-dialog title="添加用户" :visible.sync="addDialogVisible" @close="canCle" width="50%">
            <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="70px">
                <el-form-item label="用户名" prop="username">
                    <el-input v-model="addForm.username"></el-input>
                </el-form-item>
                <el-form-item label="密码" prop="password">
                    <el-input v-model="addForm.password"></el-input>
                </el-form-item>
                <el-form-item label="邮箱" prop="email">
                    <el-input v-model="addForm.email"></el-input>
                </el-form-item>
                <el-form-item label="电话" prop="mobile">
                    <el-input v-model="addForm.mobile"></el-input>
                </el-form-item>
            </el-form>
            <span slot="footer" class="dialog-footer">
                <el-button @click="addDialogVisible = false">取 消</el-button>
                <el-button type="primary" @click="addUserForm('addFormRef')">确 定</el-button>
            </span>
        </el-dialog>
        <!-- 修改用户对话框 -->
        <el-dialog title="修改用户信息" :visible.sync="editDialogVisible" @close="editClose" width="50%">
            <el-form :model="editForm" :rules="editFormRules" ref="editFormRef" label-width="70px">
                <el-form-item label="用户名" prop="username">
                    <el-input v-model="editForm.username" disabled></el-input>
                </el-form-item>
                <el-form-item label="邮箱" prop="email">
                    <el-input v-model="editForm.email"></el-input>
                </el-form-item>
                <el-form-item label="电话" prop="mobile">
                    <el-input v-model="editForm.mobile"></el-input>
                </el-form-item>
            </el-form>
            <span slot="footer" class="dialog-footer">
                <el-button @click="editDialogVisible = false">取 消</el-button>
                <el-button type="primary" @click="editUsers('editFormRef')">确 定</el-button>
            </span>
        </el-dialog>
        <el-dialog title="分配角色" :visible.sync="setDialogVisible" width="50%" @close="setRoleDialogClosed">
            <div>
                <p>当前用户：{{userInfo.username}}</p>
                <p>当前角色：{{userInfo.role_name}}</p>
                <p>
                    分配新角色：
                    <el-select v-model="selectedRoleId" placeholder="请选择角色">
                        <!-- :label 显示文本，:value 选中值 -->
                        <el-option
                            v-for="item in roleList"
                            :key="item.id"
                            :label="item.roleName"
                            :value="item.id"
                        ></el-option>
                    </el-select>
                </p>
            </div>
            <span slot="footer" class="dialog-footer">
                <el-button @click="setDialogVisible = false">取 消</el-button>
                <el-button type="primary" @click="setUsersRole()">确 定</el-button>
            </span>
        </el-dialog>
    </div>
</template>

<script>
export default {
    data() {
        //验证邮箱格式
        var checkEmail = (rules, value, callback) => {
            const emailReg = /^\w+@\w+(\.\w+)+$/
            if (emailReg.test(value)) {
                return callback()
            }
            callback(new Error('请输入正确的邮箱'))
        }
        var checkPhone = (rule, value, callback) => {
            if (!value) {
                return callback(new Error('手机号不能为空'))
            } else {
                const reg = /^1[3|4|5|7|8][0-9]\d{8}$/
                // console.log(reg.test(value))
                if (reg.test(value)) {
                    callback()
                } else {
                    return callback(new Error('请输入正确的手机号'))
                }
            }
        }
        return {
            queryinfo: {
                query: '',
                pagenum: 1,
                pagesize: 2
            },
            addForm: {
                username: '',
                password: '',
                email: '',
                mobile: ''
            },
            editForm: {},
            userList: [],
            total: 0,
            addDialogVisible: false,
            editDialogVisible: false,
            setDialogVisible: false,
            addFormRules: {
                username: [
                    {
                        required: true,
                        message: '请输入用户名称',
                        trigger: 'blur'
                    },
                    {
                        min: 3,
                        max: 10,
                        message: '用户名在3~10个字符之间',
                        trigger: 'blur'
                    }
                ],
                password: [
                    { required: true, message: '请输入密码', trigger: 'blur' },
                    {
                        min: 6,
                        max: 15,
                        message: '密码在6~15个字符之间',
                        trigger: 'blur'
                    }
                ],
                email: [
                    { required: true, message: '请输入邮箱', trigger: 'blur' },
                    { validator: checkEmail, trigger: 'blur' }
                ],
                mobile: [
                    {
                        required: true,
                        message: '请输入手机号码',
                        trigger: 'blur'
                    },
                    { validator: checkPhone, trigger: 'blur' }
                ]
            },
            editFormRules: {
                username: [
                    {
                        required: true,
                        message: '请输入用户名称',
                        trigger: 'blur'
                    },
                    {
                        min: 3,
                        max: 10,
                        message: '用户名在3~10个字符之间',
                        trigger: 'blur'
                    }
                ],
                email: [
                    { required: true, message: '请输入邮箱', trigger: 'blur' },
                    { validator: checkEmail, trigger: 'blur' }
                ],
                mobile: [
                    {
                        required: true,
                        message: '请输入手机号码',
                        trigger: 'blur'
                    },
                    { validator: checkPhone, trigger: 'blur' }
                ]
            },
            //接收要分配角色的当前选中的用户信息
            userInfo: {},
            roleList: [],
            selectedRoleId: ''
        }
    },
    created() {
        this.getUserList()
    },
    methods: {
        async getUserList() {
            const { data: res } = await this.$http.get('/users', {
                params: this.queryinfo
            })
            if (res.meta.status !== 200)
                return this.$message.error(res.meta.msg)
            this.userList = res.data.users
            this.total = res.data.total
        },
        handleSizeChange(val) {
            // 当pagesize改变时触发该事件，val是当前的pagesize大小
            this.queryinfo.pagesize = val
            //重新加载页面
            this.getUserList()
        },
        handleCurrentChange(val) {
            //当页码发生改变时，触发该事件 val代表当前页码值
            this.queryinfo.pagenum = val
            this.getUserList()
        },
        async userStateChanged(row) {
            const { data: res } = await this.$http.put(
                `users/${row.id}/state/${row.mg_state}`
            )
            if (res.meta.status !== 200) {
                row.mg_state = !row.mg_state
                return this.$message.error(res.meta.msg)
            }
            this.$message.success('更改状态成功')
        },
        async addUserForm(formName) {
            this.$refs[formName].validate(async (valid) => {
                if (valid) {
                    //发送请求完成添加用户的操作
                    const { data: res } = await this.$http.post(
                        'users',
                        this.addForm
                    )
                    //判断如果添加失败，就做提示
                    if (res.meta.status !== 201)
                        return this.$message.error('添加用户失败')
                    //添加成功的提示
                    this.$message.success('添加用户成功')
                    //关闭对话框
                    this.addDialogVisible = false
                    //重新请求最新的数据
                    this.getUserList()
                } else {
                    return this.$message.error('请填写完整用户信息')
                }
            })
        },
        canCle() {
            this.$refs.addFormRef.resetFields()
        },
        async showEditUsers(id) {
            const { data: res } = await this.$http.get('users/' + id)

            if (res.meta.status !== 200) {
                return this.$message.error('用户信息获取失败')
            }
            this.editForm = res.data
            this.editDialogVisible = true
        },
        editClose() {
            this.$refs.editFormRef.resetFields()
        },
        editUsers(formName) {
            this.$refs[formName].validate(async (valid) => {
                if (!valid) {
                    return this.$message.error('请填写规范信息')
                }
                const { data: res } = await this.$http.put(
                    'users/' + this.editForm.id,
                    { email: this.editForm.email, mobile: this.editForm.mobile }
                )
                if (res.meta.status !== 200) {
                    return this.$message.error('修改失败')
                }
                this.$message.success('修改成功')
                this.getUserList()
                this.editDialogVisible = false
            })
        },
        async delUsers(id) {
            const confirm = await this.$confirm(
                '此操作将永久删除该用户, 是否继续?',
                '提示',
                {
                    confirmButtonText: '确定',
                    cancelButtonText: '取消',
                    type: 'warning'
                }
            ).catch(() => {
                this.$message({
                    type: 'info',
                    message: '已取消删除'
                })
            })
            if (confirm === 'confirm') {
                const { data: res } = await this.$http.delete('users/' + id)
                if (res.meta.status !== 200) {
                    this.$message.error('删除失败')
                }
                this.$message({
                    type: 'success',
                    message: res.meta.msg
                })
                this.getUserList()
            }
        },
        async showUsersRoles(userInfo) {
            //保存用户信息，方便展示
            this.userInfo = userInfo
            //获取所有的角色信息
            const { data: res } = await this.$http.get('roles')
            if (res.meta.status !== 200) {
                return this.$message.error('获取角色失败')
            }
            this.roleList = res.data
            this.setDialogVisible = true
        },
        async setUsersRole() {
            //判断是否选中了角色
            if (!this.selectedRoleId) {
                return this.$message.error('请选中您要更改的角色')
            }
            const {
                data: res
            } = await this.$http.put(`users/${this.userInfo.id}/role`, {
                rid: this.selectedRoleId
            })
            if (res.meta.status !== 200) {
                return this.$message.error('分配角色失败')
            }
            this.$message.success('分配角色成功')
            //重新加载数据
            this.getUserList()
            this.setDialogVisible = false
        },
        setRoleDialogClosed() {
            //当关闭对话框的时候，重置下拉框中的内容
            this.selectedRoleId = ''
            this.userInfo = {}
        }
    }
}
</script>

<style lang='less' scoped>
</style>